From 8b28e38942ce8b61966da90af644c9948a007eda Mon Sep 17 00:00:00 2001
From: "Aaron M. Ucko" <ucko@debian.org>
Date: Sun, 30 Mar 2025 17:39:57 -0400
Subject: options.cmake: Check Threads_FOUND, not CMAKE_HAVE_THREADS_LIBRARY

The former's been available since CMake v2.8 and documented since v3.17;
the latter was never documented and quietly went away in CMake v3.24.
---
 CMake/options.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMake/options.cmake b/CMake/options.cmake
index d2fa392f7..8411b92ec 100644
--- a/CMake/options.cmake
+++ b/CMake/options.cmake
@@ -739,11 +739,11 @@ if(FLTK_USE_PTHREADS)
 
   include(FindThreads)
 
-  if(CMAKE_HAVE_THREADS_LIBRARY)
+  if(Threads_FOUND)
     add_definitions("-D_THREAD_SAFE -D_REENTRANT")
     set(USE_THREADS 1)
     set(FLTK_THREADS_FOUND TRUE)
-  endif(CMAKE_HAVE_THREADS_LIBRARY)
+  endif(Threads_FOUND)
 
   if(CMAKE_USE_PTHREADS_INIT AND NOT WIN32)
     set(HAVE_PTHREAD 1)
-- 
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